Results 21 to 30 of about 497 (146)

Tall fescue seed extraction and partial purification of ergot alkaloids

Frontiers in Chemistry, 2014
Many substances in the tall fescue/endophyte association (Schedonorus arundinaceus/Epichloë coenophiala) have biological activity. Of these compounds only the ergot alkaloids are known to have significant mammalian toxicity and the predominant ergot ...
Lowell eBush
doaj   +1 more source

Acute exposure to ergot alkaloids from endophyte-infected tall fescue does not alter absorptive or barrier function of the isolated bovine ruminal epithelium*

Animal, 2014
Ergot alkaloids in endophyte-infected (Neotyphodium coenophialum) tall fescue (Lolium arundinaceum) have been shown to cause a reduction in blood flow to the rumen epithelium as well as a decrease in volatile fatty acids (VFA) absorption from the washed ...
A.P. Foote, G.B. Penner, M.E. Walpole, J.L. Klotz, K.R. Brown, L.P. Bush, D.L. Harmon   +6 more
doaj   +1 more source

Isoflavone Containing Legumes Mitigate Ergot Alkaloid-Induced Vasoconstriction in Goats (Capra hircus)

Animals, 2022
Ergot alkaloids produced by a fungal endophyte that infects tall fescue (Lolium arundinaceum; (E+ TF) can induce constriction of the vasculature in ruminants, resulting in “fescue toxicosis”.
Brittany E. Harlow, Michael D. Flythe, Jack P. Goodman, Huihua Ji, Glen E. Aiken   +4 more
doaj   +1 more source

Occurrence of Alkaloids in Grass Seeds Symbiotic With Vertically-Transmitted Epichloë Fungal Endophytes and Its Relationship With Antioxidants

Frontiers in Ecology and Evolution, 2018
Host organisms can acquire new functional traits through symbiosis. Seed-transmitted Epichloë fungal endophytes are known to protect host plants against herbivores and increase tolerance to abiotic stresses by alkaloids and antioxidants, respectively ...
Pedro E. Gundel, Charlotte E. Seal, Fernando Biganzoli, Marco A. Molina-Montenegro, Marco A. Molina-Montenegro, Beatriz R. Vázquez-de-Aldana, Iñigo Zabalgogeazcoa, Lowell P. Bush, María A. Martínez-Ghersa, Claudio M. Ghersa   +9 more
doaj   +1 more source

Ergovaline poisoning in a herd of dairy cows – a case report [PDF]

Medycyna Weterynaryjna, 2019
Endophytes are fungi of the genus Neotyphodium that live in symbiosis with grasses. The effects of this symbiosis can be both negative and positive. The negative effect may be due to alkaloids produced by endophytes that in higher concentrations are toxic to animals. The most common alkaloids produced by Neotyphodium fungi are ergovaline and lolitrem B.
JAN MARCZUK, JERZY ZIĘTEK, KATARZYNA ZWIERZ, STANISŁAW WINIARCZYK, KRZYSZTOF LUTNICKI, PIOTR BRODZKI, ŁUKASZ ADASZEK   +6 more
openaire   +1 more source

Feeding Tall Fescue Seed Reduces Ewe Milk Production, Lamb Birth Weight and Pre-Weaning Growth Rate

Animals, 2020
Endophyte-infected tall fescue (E+) produces ergovaline and ergovalinine, which are mycotoxins that act as dopamine agonists to suppress prolactin and induce vasoconstriction.
Jessica L. Britt, Maslyn A. Greene, Sarah A. Wilbanks, J. Keith Bertrand, James L. Klotz, William Bridges, Glen Aiken, John G. Andrae, Susan K. Duckett   +8 more
doaj   +1 more source

Preference by sheep for endophyte-infected tall fescue grown adjacent to or at a distance from alfalfa

Animal, 2015
Two experiments were conducted to assess preference by sheep for endophyte-infected tall fescue growing in monoculture at least 5 m away from alfalfa (fescue-middle (FM)) over endophyte-infected tall fescue growing adjacent (0.2 to 1 m; fescue–alfalfa ...
M.A. Friend, F.D. Provenza, J.J. Villalba   +2 more
doaj   +1 more source

The Usage of Ergot (Claviceps purpurea (fr.) Tul.) in Obstetrics and Gynecology: A Historical Perspective

Toxins, 2021
In the past centuries consumption of bread made of ergot-infected flour resulted in mass poisonings and miscarriages. The reason was the sclerotia of Claviceps purpurea (Fr.) Tul.—a source of noxious ergot alkaloids (ergotamine and ergovaline).
Aleksander Smakosz, Wiktoria Kurzyna, Michał Rudko, Mateusz Dąsal   +3 more
doaj   +1 more source

Chromosome-End Knockoff Strategy to Reshape Alkaloid Profiles of a Fungal Endophyte

G3: Genes, Genomes, Genetics, 2016
Molecular genetic techniques to precisely eliminate genes in asexual filamentous fungi require the introduction of a marker gene into the target genome.
Simona Florea, Timothy D. Phillips, Daniel G. Panaccione, Mark L. Farman, Christopher L. Schardl   +4 more
doaj   +1 more source

Natural variation of root lesion nematode antagonism in the biocontrol fungus Clonostachys rosea and identification of biocontrol factors through genome‐wide association mapping

Evolutionary Applications, Volume 13, Issue 9, Page 2264-2283, October 2020., 2020
Abstract Biological control is a promising approach to reduce plant diseases caused by nematodes to ensure high productivity in agricultural production. Large‐scale analyses of genetic variation in fungal species used for biocontrol can generate knowledge regarding interaction mechanisms that can improve efficacy of biocontrol applications.
Mudassir Iqbal, Martin Broberg, Deepak Haarith, Anders Broberg, Kathryn E. Bushley, Mikael Brandström Durling, Maria Viketoft, Dan Funck Jensen, Mukesh Dubey, Magnus Karlsson   +9 more
wiley   +1 more source